Alternativas ao Feedbunch para Firefox com licença de código aberto

• Firefox
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Vivaldi Browser BSD Xfce PortableApps.com Chrome Cloudron
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial